JPH10216946A - Welding equipment for fitting to sleeve brick at tap hole of converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of the welding and fixing work of an annular flange part of a sleeve brick fitting of a tap hole of a converter to a flange of the tap hole of the converter, and to secure the safety in the labor saving. SOLUTION: Hinged joints 12 having a stud are fixed to six parts of a peripheral edge part of an annular flange part 7 of a sleeve brick fitting 5 of a tap hole of a converter. A fitting support tube 10 is inserted in the sleeve brick fitting 5 is the tap hole of the converter. A cylinder 11 is contracted, a stud gun support arm 9 is moved, a stud gun 17 is pressed against the stud arranged on the hinged joint 12, and the stud is welded to a tap hole 8 of the converter. The stud of the hinged joint 12 fixed to other positions is welded by turning the arm 9 by a turning cylinder 18. The annular flange part 7 is welded and fixed to the flange 8 of the tap hole of the converter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing a sleeve brick of a tap hole of a converter with an annular flange portion of a metal fitting for a sleeve brick of a tap hole of a converter to a converter tap flange (converter metal). The present invention relates to an automatic welding device for welding.

[0002]

2. Description of the Related Art A converter is provided with a tapping outlet for discharging refined molten metal. FIG. 17 is a schematic sectional view of the vicinity of a tapping port of a conventional converter. The vicinity of the tap hole of the converter is constituted by a steel shell 1a of a steel plate furnace, a lining brick 2a, a tap hole brick 2b, and a tap hole 3 having a substantially circular cross section.

[0003] Since the sleeve brick 4 inserted into the tap hole 3 is melted by the discharge of the molten metal, for example, approximately 17
It is replaced and repaired every 0 to 180 times. The operation of exchanging the sleeve brick is performed as follows. That is, the melted tap hole 3 is machined into an inner cylindrical shape corresponding to the outer diameter of the sleeve brick 4, and the cylindrical portion 6 of the tap hole sleeve brick mounting bracket (hereinafter referred to as "mounting bracket") 5 is formed into a sleeve. It is inserted into the brick 4 and inserted into the tapping hole 3 of the furnace body 1. Then, the outer wall 1a of the furnace body at the annular flange portion 7 of the mounting hardware 5 and the tapping port 3 portion.
Is fixed by welding to the annular converter steel outlet flange 8 projecting therefrom. Then, a liquid amorphous refractory (not shown) is inserted into the gap between the sleeve brick 4 and the tapping brick 2b from inside the converter.
And solidifies it to close the gap and fix the sleeve brick 4. The mounting hardware 5 melts and flows out by the molten metal that is tapped from the tapping port 3.

[0004]

In the above, the operation of welding and fixing the annular flange portion 7 of the mounting hardware 5 and the converter outlet flange 8 is conventionally performed manually by an operator. .

[0005] However, a plurality of converters are provided side by side in a converter plant, and furthermore, various facilities for operating the converter are provided, and work in the plant is performed under high heat and at a high place. It is an environment, with poor workability and danger. Furthermore, there is a problem that the replacement and repair work of the sleeve brick may take a long time at midnight, so that the worker is tired.

[0006] For these reasons, there is a demand for the development of an apparatus capable of performing the above-mentioned welding operation by automation, but such an apparatus has not yet been proposed. Therefore, an object of the present invention is to fix and fix the annular flange portion of the tap hole sleeve brick mounting hardware and the converter tap hole at the time of replacement and repair of the sleeve brick of the converter tap hole by automation. It is to provide a welding device that can be implemented.

[0007]

According to the first aspect of the present invention,
The annular flange portion of the converter tapping sleeve sleeve brick mounting hardware inserted into the cylindrical sleeve brick and integrated with the sleeve brick and inserted into the converter tapping port is welded and fixed to the converter tapping port flange. In the welding device for performing, the welding device includes a fixing frame, a fixing metal support fixed to the fixing frame, a mounting metal support that can be inserted into the converter steel outlet sleeve brick mounting metal, and the mounting metal support. A sliding body slidably provided in the longitudinal direction, a welding gun support arm having two arms provided on the sliding body, a stud welding gun provided at a tip end of the welding gun support arm, A rotating mechanism for rotating the welding gun support arm in the circumferential direction about the sliding body; and a plurality of studs fixedly circumferentially fixed to the annular flange by sliding the sliding body. Consists of a cylinder mechanism for pressing the stud welding gun to a stud of the contact fitting,
The stud welding gun pressed against the stud by the cylinder mechanism welds the stud to the converter tapping port flange, and rotates the stud welding gun by the rotation mechanism to weld all the studs. And fixing the annular flange portion and the converter tap hole flange by welding.

According to a second aspect of the present invention, there is provided an annular flange portion of a metal fitting for a sleeve brick at a converter outlet, which is inserted into a cylindrical sleeve brick and is inserted into a converter tap hole integrally with the sleeve brick. In the welding device for welding and fixing to the converter tapping flange, the welding device comprises a fixing frame, and a fixing fixed to the fixing frame, which can be inserted into the converter tapping port sleeve brick mounting hardware. Welding gun support arm comprising a metal support, a sliding member slidably provided in the longitudinal direction of the mounting metal support, and an arm radially provided on the slide with the mounting metal support as a center. A stud welding gun provided at the distal end of the welding gun support arm, and a rod provided on the sliding body fixed to the mounting hardware support, and sliding the sliding body to form the ring. A cylinder mechanism for pressing the stud welding gun against studs of a plurality of stud welding joints fixed in the circumferential direction of the flange portion, and an operation control mechanism of the stud welding gun, and the stud welding gun is attached to the stud by the cylinder mechanism. The stud welding gun pressed the studs simultaneously or by switching the energizing section by the operation control mechanism to weld to the converter tapping flange, welding the annular flange portion and the converter tapping flange. It is characterized by being fixed.

The invention described in claim 3 is the first or second invention.
In the invention described, the stud welding joint is fixed to the annular flange portion, a joint plate having a through hole, and an insulating material having a through hole provided inside the through hole of the joint plate. And a stud provided through the through hole of the joint plate and the insulating material, and a sealing material provided around the through hole of the joint plate.

[0010] The invention according to claim 4 is the invention according to claim 1 or 2.
In the invention described in the above, the stud welding joint is provided with a fixing portion fixed to the annular flange portion and a force to bend toward the converter steel outlet flange, which is connected to the fixing portion so as to bend freely. A joint plate comprising a movable part having a through hole, and provided inside the movable part,
It is characterized by comprising an insulating material having a through-hole, a stud disposed through the through-hole of the movable portion and the insulating material, and a sealing material provided around the through-hole of the movable portion. Have

The invention according to claim 5 is the first or second invention.
In the described invention, the stud welding joint is substantially L-shaped.
The stud is formed in a substantially L-shape.
One part thereof is substantially horizontal with respect to the annular flange part,
The other portion is disposed substantially perpendicularly to the converter tapping flange, and the stud welding gun welds the substantially L-shaped stud to the annular flange portion and the converter tapping flange. And fixing the annular flange portion and the converter tapping flange.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a first embodiment of the welding apparatus of the present invention in a state of replacing a sleeve brick of a converter tap hole, FIG. 2 is a side view showing a first embodiment of the welding apparatus of the present invention, and FIG. 4 is a front view, FIG. 4 is a rear view of FIG. 3, FIG. 5 is a front view showing a mounting hardware stopper, FIG. 6 is a front view showing a fixed crown seat, and FIG. 7 is a side view.

As shown in the drawings, the present invention is characterized in that an annular flange portion 7 of a converter outlet steel outlet sleeve brick mounting metal fitting 5 which is inserted and integrated into a cylindrical sleeve brick 4 is connected to a converter outlet steel outlet flange 8. Stud welded to the sleeve brick 4
This is a welding device for mounting and fixing the steel plate to the converter tapping hole (see FIG. 16).

The mounting hardware 5 comprises an annular flange portion 7 with which the end face of the sleeve brick 4 abuts and a cylindrical portion 6 having one end fixed to the annular flange portion 7. Mounting hardware 5
Are inserted into the cylindrical sleeve brick 4 to be integrated (see FIG. 16).

The mounting hardware support 10 is formed of a tube (hereinafter referred to as "mounting hardware support pipe 10").
The mounting hardware support tube 10 has a size that can be inserted into the cylindrical portion 6 of the mounting hardware 5, and in this embodiment, a square tube having a square cross section is used. One end of the mounting hardware support tube 10 is bolted to the fixed crown seat 19 (FIGS. 6 and 7).
reference).

The fixed crown seat 19 is fixed to the welding device mounting seat 25 of the sleeve brick exchanging device.
Is fixed to the head 24 of the sleeve brick exchanging device. Although the sleeve brick exchanging device is not shown, it is provided on a floor surface at a predetermined position below the converter or on a self-propelled trolley of an installation table, and the sleeve brick 4 and the mounting hardware 5 are provided.
Is inserted into the converter tap hole.

In the middle of the mounting hardware support tube 10 in the longitudinal direction, a disk-shaped mounting hardware stopper 21 is fitted and fixed. Reference numeral 32 denotes a reinforcing rib provided on the stopper 21.

On the fixed crown seat 19 side of the stopper 21, a liner (sliding body) 27 having a square cross section is fitted outside the mounting hardware support tube 10. The mounting hardware support tube 10 and the liner 27 are slidable.

Outside the liner 27, an arm turning support cylinder 23 is fixedly provided. A bush 30 is fitted outside the support cylinder 23, and a boss 22 is fitted outside the bush 30 (see FIG. 3). The boss 22 is rotatable around a support cylinder 23 via a bush 30.

The stud gun support arm 9 is attached to the boss 22. 28 is a support arm fixing nut. The support arm 9 is composed of two arms provided on both sides of the mounting hardware support tube 10 at right angles to the support tube 10 (see FIGS. 3 and 4). At the tip of the stud gun support arm 9, stud gun holder 2
A stud welding gun 17 is provided through the intermediary 6 (see FIG. 14). Each of the two stud guns 17 is connected to an operation control mechanism (not shown).

Between the support arm 9 and the fixed crown seat 19,
On the outside of the support cylinder 23, two pivot cylinder support bases 20 are provided.
The arm turning cylinder 18 is provided via the. The tip of the rod 18a of the cylinder 18 is pivotally mounted on a protruding portion 9a provided on the support arm 9 (see FIGS. 1, 2, 3, and 4). By extending and contracting the cylinder 18 provided in this manner, the support arm 9 is rotatable in the circumferential direction around the mounting hardware support tube 10 (support tube 23) by the action of the boss 22 and the bush 30 (FIG. 3).

Two arm pressing cylinder mounts 31 are provided between the boss 22 and the stopper 21 on both sides of the support cylinder 23 (see FIG. 4). Each of the mounts 31 provided in this manner is provided with an arm pressing cylinder 11, and the rod 11a of each cylinder 11 is bolted to both sides of the stopper 21 (see FIG. 5).

The mechanism such as the support arm 9 and the cylinder 18 for turning the arm, which are configured as described above, is operated by the sliding action between the mounting hardware support tube 10 and the liner 27.
By expanding and contracting the cylinder 11, it is possible to move in the longitudinal direction of the mounting hardware support tube 10. By contracting the cylinder 11, the support arm 9 can be brought closer to the stopper 21 and the stud gun 17 can be pressed against the stud. Each of the two stud guns 17 is connected to an operation mechanism (not shown), and can perform stud welding.

FIG. 15 is a side view showing a second embodiment of the present invention, and FIG. 16 is a front view. As shown in FIGS. 15 and 16, in the present embodiment, six support arms 99 are provided radially in the circumferential direction around the mounting hardware support tube 10. The number of arms may be 4 to 8 or more. The support arm 99 is provided fixed to the support arm fixing cylinder 35 and has a structure that does not rotate. A stud gun 17 is provided at the tip of each of the six arms via a stud gun holder 26. Each of the six stud guns 17 is connected to an operation control mechanism (not shown). In the present embodiment, all of the six stud guns 17 can be configured as stud welds, and a quick welding operation can be performed. In order to save power, a stud welded portion can be switched by sequentially energizing each or a plurality of the six stud guns 17 by the operation control mechanism.

Next, the joint for stud welding of the stud welding portion of the present invention will be described. FIG. 8 is a cross-sectional view showing a hinge type joint plate, FIG. 9 is a plan view, and FIG. 12 shows a welding state of an annular flange portion of a tapping sleeve sleeve brick mounting hardware and a converter tapping port flange by a stud welding joint. It is a perspective view.
As shown in FIGS. 1, 8, 9, and 12, a hinge type joint 12 is provided on the peripheral edge of the annular flange portion 7 of the mounting hardware 5 inserted into the converter tap hole together with the sleeve brick 4. The portion 7 and the converter tapping port flange 8 are arranged so as to straddle each other. The hinge type joint plate 12 includes a fixed portion 12 a fixed in advance to the annular flange portion 7 of the mounting hardware 5 by welding, and a movable portion 12 b hinged by the hinge portion 13. The hinge portion 13 is provided with an elastic body such as a spring (not shown) so as to rotate the movable portion 12b toward the converter steel outlet flange 8. The movable part 12b is provided with a through hole for passing a stud. Further, a ferrule (insulating material) 14 having a through hole is provided by a stopper 33 inside the through hole of the movable part 12b. A stud 15 is disposed through the two through holes, and a through hole and a stud 15 are provided around the through hole of the movable portion 12b.
Is provided with a shielding sheet (sealant) 16 for shielding the image.

By pressing the stud gun 17 against the stud 15 and performing stud welding, the stud 15
And the converter tapping flange 8 are welded and fixed, whereby the mounting hardware 5 and the converter tapping flange 8 are fixed.

As shown in FIG. 12, instead of the hinge type joint plate 12, a flat joint 29 having no hinge portion and having the stud 15 in the through hole may be used.
The flat joint 29 is welded to the annular flange 7 of the mounting hardware 5.

FIG. 10 is a side view showing a substantially L-shaped stud.
11 is a plan view, FIG. 13 is a perspective view showing a welding state between the annular flange portion of the mounting hardware and the converter tapping flange by a substantially L-shaped stud, and FIG. 14 is a side view showing a stud gun and a stud gun holder. It is.

The substantially L-shaped stud 151 is attached to the stud gun 17 in advance (see FIG. 14). A substantially L-shaped stud 151 is provided at a peripheral portion of the annular flange portion 7.
One part 151a is arranged substantially horizontally with respect to the annular flange part 7, and the other part 151b is arranged substantially perpendicularly with the converter outlet flange 8. Stud gun 17 with stud 151
, And the stud 151 is welded and fixed to the annular flange portion 7 and the converter tapping port flange 8, whereby the mounting hardware 5 and the converter tapping port flange 8 are fixed. You.

Next, the working steps according to the first embodiment of the present invention will be described. A hinged joint 12 having studs;
At six places on the periphery of the annular flange portion 7 of the mounting hardware 5,
It is fixed so as to avoid the upper and lower portions where severe erosion occurs (see the position of the stat gun 17 shown in FIG. 16 of the second embodiment for the fixed position). The metal fitting support pipe 10 is inserted into the converter brick outlet metal fitting 5 by the sleeve brick exchange device mounted on the self-propelled vehicle. The stopper 21 comes into contact with the annular flange 7 and the insertion stops. Next, the cylinder 11 is contracted and the stud gun support arm 9 composed of two arms shown in FIG. 3 is moved to press the two stud guns 17 against the studs arranged on the hinged joint 12, and the studs are removed from the converter outlet. 8 is welded. Next, the arm 9 is rotated by the revolving cylinder 8, and the studs of the hinged joint 12 fixed at other positions are sequentially welded. Thereby, the annular flange portion 7 and the converter tapping port flange 8 are fixed.

In the case of the second embodiment, as shown in FIG.
The stud gun support arm 9 composed of the two arms is moved to press the six stud guns 17 against all of the six stud guns, thereby energizing the six stud guns simultaneously. Alternatively, welding may be performed by energizing one or more of the six stud guns 17 sequentially by an operation control mechanism.

[0032]

As described above, according to the present invention, when the sleeve brick is replaced and repaired by the sleeve brick exchanging apparatus, the sleeve flange is attached to the annular flange portion of the tapping outlet sleeve brick mounting hardware. Fast and reliable welding and fixing to the furnace tapping port flange improve work efficiency, automation reduces fatigue and work load on workers, ensures safety, and thus has industrially useful effects. Brought.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a welding apparatus according to the present invention in a state of exchanging a sleeve brick at a steel outlet of a converter.

FIG. 2 is a side view showing a first embodiment of the welding apparatus of the present invention.

FIG. 3 is a front view showing a first embodiment of the welding device of the present invention.

FIG. 4 is a rear view of FIG. 3;

FIG. 5 is a front view showing a mounting hardware stopper.

FIG. 6 is a front view showing a fixed crown seat.

FIG. 7 is a side view showing a fixed crown seat.

FIG. 8 is a sectional view showing a hinge type joint plate.

FIG. 9 is a plan view showing a hinge type joint plate.

FIG. 10 is a side view showing a substantially L-shaped stud.

FIG. 11 is a plan view showing a substantially L-shaped stud.

FIG. 12 is a perspective view showing a welding state of an annular flange portion of a tapping outlet sleeve brick fitting and a converter tapping port flange by a stud welding joint.

FIG. 13 is a perspective view showing a welding state of an annular flange portion of a tapping outlet sleeve brick fitting and a converter tapping port flange by a substantially L-shaped stud.

FIG. 14 is a side view showing a stud welding gun and a stud gun holder at the tip of a stud gun support arm.

FIG. 15 is a side view showing a second embodiment of the present invention.

FIG. 16 is a front view showing a second embodiment of the present invention.

FIG. 17 is a schematic sectional view near a tapping port of a converter.

[Description of Signs] 1a Steel shell 2a Lining brick 2b Converter outlet brick 3 Converter outlet 4 Cylindrical sleeve brick 5 Converter outlet steel sleeve brick mounting hardware 6 Converter outlet steel sleeve sleeve mounting hardware Cylindrical part 7 Converter steel outlet sleeve Annular flange of brick mounting metal 8 Converter steel outlet flange 999 Stud gun support arm 10 Mounting hardware support tube 11 Arm pressing cylinder 11a Rod 12 Hinge type joint plate 12a Fixed part 12b Movable Part 13 Hinge part 14 Ferrule 15 Stud 151 Approximately L-shaped stud 16 Shielding sheet 17 Stud gun 18 Arm turning cylinder 18a Rod 19 Welding device fixed crown 20 Arm turning cylinder support base 21 Mounting hardware stopper 22 Support arm boss 23 Arm turning support cylinder 24 Replacement device head 25 Welding device receiver 2 6 Stud Gun Holder 27 Liner 28 Support Arm Fixing Nut 29 Plate Joint 30 Bush 31 Arm Pressing Cylinder Stand 32 Mounting Hardware Reinforcement Rib 33 Stopper 34 Welding Section 35 Support Arm Fixing Cylinder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuo Taniguchi 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Japan Inside the Nippon Kokan Co., Ltd. (72) Shinichi Okimoto 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Japan (72) Inventor Toshio Usui 3-13-6-609 Minamirokugo, Ota-ku, Tokyo (72) Inventor Toshiaki Miura 48-5 Nakamuracho, Omihachiman City, Shiga Prefecture

Claims (5)

[Claims] 1. An annular flange portion of a converter steel outlet port sleeve brick mounting metal, which is inserted into a cylindrical sleeve brick and integrated with the sleeve brick and inserted into a converter steel outlet,
In a welding device for welding and fixing to a converter tapping flange, the welding device includes a fixing frame, and a mounting metal support that is fixed to the fixing frame and that can be inserted into the converter tapping port sleeve brick mounting hardware. Part, a sliding body slidably provided in a longitudinal direction of the mounting hardware supporting part, a welding gun supporting arm having two arms provided on the sliding body, and a tip end of the welding gun supporting arm. A stud welding gun, a rotating mechanism for rotating the welding gun support arm in a circumferential direction around the sliding body, and a circumferential direction of the annular flange portion by sliding the sliding body. And a cylinder mechanism for pressing the stud welding gun against studs of a plurality of stud welding joints fixed to the stud welding gun, and pressed against the stud by the cylinder mechanism. The stud welding gun is used to weld the stud to the converter tapping flange, and the rotating mechanism rotates the stud welding gun to weld all the studs so that the annular flange and the converter exit. A converter for welding a metal outlet sleeve brick of a converter, which is fixed by welding to a steel mouth flange. 2. An annular flange portion of a converter steel outlet port sleeve brick mounting metal, which is inserted into a cylindrical sleeve brick and integrated into the converter steel outlet port integrally with the sleeve brick,
In a welding device for welding and fixing to a converter tapping flange, the welding device includes a fixing frame, and a mounting metal support that is fixed to the fixing frame and that can be inserted into the converter tapping port sleeve brick mounting hardware. Part, a sliding body provided slidably in the longitudinal direction of the mounting hardware support, and a welding gun support arm including an arm radially provided around the mounting hardware support on the sliding body, A stud welding gun provided at the distal end of the welding gun support arm and a rod provided on the slide are fixed to the mounting hardware support, and the slide is slid to form the annular flange. A cylinder mechanism for pressing the stud welding gun against studs of a plurality of stud welding joints fixed in a circumferential direction, and an operation control mechanism for the stud welding gun. The stud welding gun pressed against the stud by the cylinder mechanism simultaneously welds the stud to the converter tapping flange by switching an energizing section or by switching an energizing section by the operation control mechanism, and the annular flange section and the rotary A welding device for a metal fitting attached to a converter tapping sleeve sleeve, which is welded and fixed to a furnace tapping flange. 3. The joint for stud welding, the joint plate having a through hole fixed to the annular flange portion, and an insulating material having a through hole provided inside the through hole of the joint plate. The stud provided through the through-hole of the joint plate and the insulating material, and a seal material provided around the through-hole of the joint plate. Welding equipment. 4. The stud welding joint is provided with a fixing portion fixed to the annular flange portion and a force to bend toward the converter steel outlet flange connected to the fixing portion so as to be freely bent. A joint plate comprising a movable portion having a through hole, an insulating material having a through hole provided inside the movable portion, and a stud disposed through the through hole of the movable portion and the insulating material. The welding device according to claim 1, further comprising a sealing material provided around the through hole of the movable portion. 5. The stud welding joint comprises a substantially L-shaped stud, and one end of the substantially L-shaped stud is substantially horizontal with respect to the annular flange portion, and the other portion. Is disposed substantially perpendicularly to the converter tapping flange, and is substantially L-
A stud having a U shape is welded to the annular flange portion and the converter tap hole flange to fix the annular flange portion and the converter tap hole flange.
Or the welding device according to 2.